It appears to be in standard potting soil. This is a big no-no. These are epiphytes similar to orchids. This means that they live on other host species without harming them. They will require a very different "soil" that is an epiphyte mix, or cactus mix, or will need to be mounted to another tree. I don't recommend the latter unless you have quite a lot of experience anchoring epiphytes, as this can lead to a quick death of the plant without proper experience.